bc6d4c3f08
gcc: * dfp.c (WORDS_BIGENDIAN): Define to 0 if not defined. (encode_decimal64, decode_decimal64, encode_decimal128, decode_decimal128): Reverse order of 32-bit parts of value if host and target endianness differ. libdecnumber: * dconfig.h: New. * decContext.c, decExcept.c, decExcept.h, decLibrary.c, decNumber.c, decNumberLocal.h, decRound.c, dpd/decimal128.c, dpd/decimal32.c, dpd/decimal64.c: Include dconfig.h not config.h. * dpd/decimal128Local.h (decimal128SetSign, decimal128ClearSign, decimal128FlipSign): Use WORDS_BIGENDIAN not FLOAT_WORDS_BIG_ENDIAN. * bid/host-ieee128.c: Include dconfig.h. (__host_to_ieee_128, __ieee_to_host_128): Swap 64-bit halves of value if WORDS_BIGENDIAN. libgcc: * Makefile.in (DECNUMINC): Remove -I$(MULTIBUILDTOP)../../libdecnumber. * gstdint.h: New. From-SVN: r136641
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* This is a software decimal floating point library.
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Copyright (C) 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include <string.h>
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#include "dconfig.h"
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#include "bid-dpd.h"
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#include "decimal128.h"
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void __host_to_ieee_128 (_Decimal128 in, decimal128 *out);
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void __ieee_to_host_128 (decimal128 in, _Decimal128 *out);
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/* The code for converting 128-bit values between DPD and BID presumes
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that the 64-bit halves of the 128-bit value are in little-endian
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order, so they need swapping on big-endian hosts. */
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void
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__host_to_ieee_128 (_Decimal128 in, decimal128 *out)
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{
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#if WORDS_BIGENDIAN
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memcpy ((char *) out, (char *) &in + 8, 8);
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memcpy ((char *) out + 8, (char *) &in, 8);
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#else
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memcpy ((char *) out, (char *) &in, 16);
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#endif
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}
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void
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__ieee_to_host_128 (decimal128 in, _Decimal128 *out)
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{
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#if WORDS_BIGENDIAN
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memcpy ((char *) out, (char *) &in + 8, 8);
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memcpy ((char *) out + 8, (char *) &in, 8);
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#else
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memcpy ((char *) out, (char *) &in, 16);
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#endif
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}
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